Detachable-shoe colter



A. B. MACAULAY- DETACHABLE SHOE COLTER.

APPLICATION FILED JUNE 21, ms.

Patented Feb. 22, 1921'.

UNI-T ED .PVALTETNF orricaf nncusrazanmeron MAOAULAY, or WINNIPEG, MANITOBA, cannon.

f nnrAcnAB E-sHon Corinna.

7 To all whom it may cancer mi Be it known that I, ANGUS BABE-moron MAOAULAY, subject of the King of Great Britain, residing at thecity of Winni eg, in the Province of Manitoba, in the 0 minion of Canada, have invented certain new and useful Improvements in Detachable- Shoe Colters, of which. the following is a specification. p

This invention relates to colters used on plows preceding the plow shares, andthe object of the invention is to provide a colter having a shoe adapted to take the wear to which such devices are subject, and which is easily detachable for renewal or sharpening purposes. I

With this object in view the invention consists in the novel combination and arrangement of parts hereinafter first fully described in the following specification and then more particularly pointed out in the appended, claims, reference also being had to the drawings forming part hereof, in which similar characters of reference indicate similar parts throughout the different views, and in which- Figure 1 is a side elevation of a fragment of a plow, showing the invention in its operative connection therewith.

Fig. 2 is a front elevation of the colter apart from the plow.

Fig. 3 is a side elevation of the colter with part of the side of the shoe broken away to show the connection of the standard or bar, therewith.

Fig. 4 shows the standard with the shoe removed.

Fig. 5 is a plan view'of the shoe from above.

Fig. 6 is a section taken through the shoe on the plane of the line 66 in Fig. 5.

In the drawing A indicates a fragment of a plow of ordinary construction, having a moldboard 1, a share 2 and a beam 3, while B indicates the colter as a whole.

The colter consists of a shoe having a body 1, flat on the land side and .of comparatively narrow construction describing a gentle curve from the furrow side to a concaved cutting edge 5 in the plane of the land side, the cutting edge terminating in a forwardly directed chisel point 6,-the bottom 7 of the shoe being flat and of slightly Specification of'Lette'rs" Patent.

greaterwidththan the upper. structure'of the body clear from front to rear, and the p Patented Feb. '22, 1921. Application filediime 27, 1919., Serial No. 307,084. I I if whole structurehaving a rearward set from the chisel point,. as is clearly shown inthe drawings. y

The shoe is cored out in thecasting to form an lnterior chamber 8 shaped to receive the lower end 9 of the bar or standard 10, the forward end of the chamber having an offset recess 11, and the end 9 of the bar having a toe 12 to fit the recess when the shoe 1s in position on the bar.

The rear side of the shoe is cut away to provide a space 13 the rabbet 14 merely forming a loop thereabove, thus allowing easy entrance of the end 9 of the bar into the chamber in the manner indicated by the dotted lines in Fig. 6. J i

The chamber 8,,it' will be observed, enllarges fromfrontto rear as it deepens, thus allowing the bar 10 to reach its normal posit1on wlth the toe 12 in the recess 11. .Owing to the enlargement of the chamber above noted, a space 15 is left therein at the rear of the bar, and a key 16 is driven down into this space behind the bar, thus securing the shoe in position.

. The space 13 at therear of the shoe makes or to its position thereontoward the front 01' rear.

The bar 10 is secured to the plow beam 3' in the usual manner, by a compression clip 20, and it is preferably curved as at 21 to accommodate it to the relative positions of the plow beam 3 andthe shoe on the colter.

y it possible to insert the key without trouble,

From the foregoing description it will be understood that the colter as awhole 1s a comparatively substantial structure both in size and weight, as is necessary for the up rooting and cutting of scrub in preliminary breaking, frequently in stony ground, and that it provides under these conditions, the essentials of strength and ease of removal of the shoe for sharpening purposes or renewal in case of accident.

Having thus fully described my said invention, what I claim is a 1. A colter comprising a bar adapted'for' attachment to a plow-beam, means to adjust the bar vertically with relation to the p1ow-beam, and a shoe removably secured upon the bar.

2. A colter comprising a shoe formed with a landside, a furrow side curving forwardly to a cutting edge in the plane of the landside, a bottom comparatively wider than the body of the shoe terminating forwardly in a chisel point, a bar adapted for attachment to a plow beam, and means to removably secure the shoe upon the bar.

3. A colter comprising a shoe having a bottom terminating in a forwardly directed chisel point, a body surmounting the bottom formed with a landside, a furrow side merging into an'inwardly curved cutting edge, an oblong chamber formed in the shoe of greater longitudinal dimension at the bottomthan atthe top, a bar suitable for at tachment to a plow beam adapted to fit the cross dimension of the chamber, and a key adapted to enter the chamber behind the bar to maintain the connection of the shoe with the bar. V

In testimony whereof I aflix my signature.

ANGUS BABBINGTON MacAULAY. 

